Lavatory basin



FIG. 1 is a front, raised perspective view of a lavatory basin according to the invention;

FIG. 2 is a front view of the lavatory basin according to FIG. 1;

FIG. 3 is a rear view of the lavatory basin according to FIG. 1;

FIG. 4 is top view of the lavatory basin according to FIG. 1;

FIG. 5 is a bottom view of the lavatory basin according to FIG. 1;

FIG. 6 is a right side view of the lavatory basin according to FIG. 1; and,

FIG. 7 is a left side view of the lavatory basin according to FIG. 1.

The broken-lines in the drawings show portions of the lavatory basin that form no part of the claimed design. 

CLAIM The ornamental design for a lavatory basin, substantially as shown and described. 